./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a81d76a671fec08918102c7898e8919d02b265d05707efa1508363dab4714d44 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 20:11:30,065 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 20:11:30,102 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 20:11:30,105 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 20:11:30,105 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 20:11:30,119 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 20:11:30,119 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 20:11:30,119 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 20:11:30,119 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 20:11:30,120 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 20:11:30,120 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 20:11:30,120 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 20:11:30,120 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 20:11:30,120 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 20:11:30,120 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 20:11:30,120 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 20:11:30,120 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 20:11:30,120 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 20:11:30,121 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 20:11:30,121 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 20:11:30,121 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 20:11:30,121 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 20:11:30,121 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 20:11:30,121 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 20:11:30,121 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 20:11:30,121 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 20:11:30,121 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 20:11:30,121 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 20:11:30,121 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 20:11:30,122 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 20:11:30,122 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 20:11:30,122 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 20:11:30,122 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 20:11:30,122 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 20:11:30,122 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 20:11:30,122 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 20:11:30,122 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 20:11:30,122 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 20:11:30,122 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 20:11:30,122 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 20:11:30,122 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 20:11:30,122 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 20:11:30,122 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 20:11:30,122 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a81d76a671fec08918102c7898e8919d02b265d05707efa1508363dab4714d44 [2025-02-07 20:11:30,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 20:11:30,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 20:11:30,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 20:11:30,353 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 20:11:30,353 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 20:11:30,354 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i [2025-02-07 20:11:31,603 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/897c1a4e3/c3d4bd38be0044b58ea330ec59bd3c95/FLAG53eed66f2 [2025-02-07 20:11:31,882 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 20:11:31,883 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i [2025-02-07 20:11:31,897 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/897c1a4e3/c3d4bd38be0044b58ea330ec59bd3c95/FLAG53eed66f2 [2025-02-07 20:11:32,156 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/897c1a4e3/c3d4bd38be0044b58ea330ec59bd3c95 [2025-02-07 20:11:32,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 20:11:32,159 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 20:11:32,161 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 20:11:32,162 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 20:11:32,165 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 20:11:32,165 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 08:11:32" (1/1) ... [2025-02-07 20:11:32,167 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@615fef50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:11:32, skipping insertion in model container [2025-02-07 20:11:32,167 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 08:11:32" (1/1) ... [2025-02-07 20:11:32,192 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 20:11:32,415 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i[24177,24190] [2025-02-07 20:11:32,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 20:11:32,427 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 20:11:32,463 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i[24177,24190] [2025-02-07 20:11:32,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 20:11:32,484 INFO L204 MainTranslator]: Completed translation [2025-02-07 20:11:32,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:11:32 WrapperNode [2025-02-07 20:11:32,486 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 20:11:32,487 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 20:11:32,487 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 20:11:32,487 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 20:11:32,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:11:32" (1/1) ... [2025-02-07 20:11:32,499 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:11:32" (1/1) ... [2025-02-07 20:11:32,515 INFO L138 Inliner]: procedures = 126, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 100 [2025-02-07 20:11:32,517 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 20:11:32,518 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 20:11:32,518 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 20:11:32,518 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 20:11:32,523 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:11:32" (1/1) ... [2025-02-07 20:11:32,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:11:32" (1/1) ... [2025-02-07 20:11:32,529 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:11:32" (1/1) ... [2025-02-07 20:11:32,549 INFO L175 MemorySlicer]: Split 21 memory accesses to 3 slices as follows [2, 11, 8]. 52 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 10 writes are split as follows [0, 9, 1]. [2025-02-07 20:11:32,549 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:11:32" (1/1) ... [2025-02-07 20:11:32,549 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:11:32" (1/1) ... [2025-02-07 20:11:32,557 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:11:32" (1/1) ... [2025-02-07 20:11:32,561 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:11:32" (1/1) ... [2025-02-07 20:11:32,562 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:11:32" (1/1) ... [2025-02-07 20:11:32,562 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:11:32" (1/1) ... [2025-02-07 20:11:32,564 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 20:11:32,564 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 20:11:32,568 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 20:11:32,568 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 20:11:32,569 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:11:32" (1/1) ... [2025-02-07 20:11:32,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 20:11:32,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:11:32,595 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-07 20:11:32,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-07 20:11:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-07 20:11:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-07 20:11:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-07 20:11:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2025-02-07 20:11:32,620 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2025-02-07 20:11:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-07 20:11:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 20:11:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-07 20:11:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-07 20:11:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-07 20:11:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-07 20:11:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-07 20:11:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-07 20:11:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-07 20:11:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-07 20:11:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-07 20:11:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-07 20:11:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-07 20:11:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 20:11:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-07 20:11:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-07 20:11:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 20:11:32,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 20:11:32,729 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 20:11:32,731 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 20:11:32,861 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L625: assume false;assume false;main_#res#1 := 1;call ULTIMATE.dealloc(main_~#s~0#1.base, main_~#s~0#1.offset);havoc main_~#s~0#1.base, main_~#s~0#1.offset; [2025-02-07 20:11:32,861 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L625: assume !false; [2025-02-07 20:11:32,861 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L616: call ULTIMATE.dealloc(main_~#s~0#1.base, main_~#s~0#1.offset);havoc main_~#s~0#1.base, main_~#s~0#1.offset; [2025-02-07 20:11:32,886 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L578: havoc myexit_~s#1;havoc myexit_#in~s#1;assume { :end_inline_myexit } true; [2025-02-07 20:11:32,900 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2025-02-07 20:11:32,901 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 20:11:32,912 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 20:11:32,912 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 20:11:32,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:11:32 BoogieIcfgContainer [2025-02-07 20:11:32,913 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 20:11:32,914 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 20:11:32,914 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 20:11:32,917 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 20:11:32,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 08:11:32" (1/3) ... [2025-02-07 20:11:32,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@178fbec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 08:11:32, skipping insertion in model container [2025-02-07 20:11:32,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:11:32" (2/3) ... [2025-02-07 20:11:32,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@178fbec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 08:11:32, skipping insertion in model container [2025-02-07 20:11:32,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:11:32" (3/3) ... [2025-02-07 20:11:32,918 INFO L128 eAbstractionObserver]: Analyzing ICFG dll2c_remove_all_reverse.i [2025-02-07 20:11:32,928 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 20:11:32,929 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG dll2c_remove_all_reverse.i that has 2 procedures, 22 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-02-07 20:11:32,964 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 20:11:32,971 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3572886d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 20:11:32,971 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 20:11:32,974 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 16 states have (on average 1.375) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-07 20:11:32,977 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-07 20:11:32,979 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-07 20:11:32,981 INFO L422 BasicCegarLoop]: Path program histogram: [] [2025-02-07 20:11:32,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 16 states have (on average 1.375) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-07 20:11:32,997 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-07 20:11:33,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 08:11:33 BoogieIcfgContainer [2025-02-07 20:11:33,003 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-07 20:11:33,004 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-07 20:11:33,004 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-07 20:11:33,004 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-07 20:11:33,005 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:11:32" (3/4) ... [2025-02-07 20:11:33,006 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-07 20:11:33,008 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure node_create [2025-02-07 20:11:33,011 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2025-02-07 20:11:33,011 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-02-07 20:11:33,011 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-07 20:11:33,011 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-07 20:11:33,072 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-07 20:11:33,073 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-07 20:11:33,073 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-07 20:11:33,074 INFO L158 Benchmark]: Toolchain (without parser) took 914.27ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 59.2MB in the end (delta: 52.2MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-02-07 20:11:33,074 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 20:11:33,074 INFO L158 Benchmark]: CACSL2BoogieTranslator took 325.21ms. Allocated memory is still 142.6MB. Free memory was 110.9MB in the beginning and 93.3MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-07 20:11:33,075 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.85ms. Allocated memory is still 142.6MB. Free memory was 93.3MB in the beginning and 91.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 20:11:33,075 INFO L158 Benchmark]: Boogie Preprocessor took 45.85ms. Allocated memory is still 142.6MB. Free memory was 91.4MB in the beginning and 89.3MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 20:11:33,076 INFO L158 Benchmark]: IcfgBuilder took 348.28ms. Allocated memory is still 142.6MB. Free memory was 89.3MB in the beginning and 73.0MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-07 20:11:33,076 INFO L158 Benchmark]: TraceAbstraction took 89.55ms. Allocated memory is still 142.6MB. Free memory was 72.5MB in the beginning and 65.1MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 20:11:33,077 INFO L158 Benchmark]: Witness Printer took 68.86ms. Allocated memory is still 142.6MB. Free memory was 65.1MB in the beginning and 59.2MB in the end (delta: 6.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 20:11:33,080 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 325.21ms. Allocated memory is still 142.6MB. Free memory was 110.9MB in the beginning and 93.3MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.85ms. Allocated memory is still 142.6MB. Free memory was 93.3MB in the beginning and 91.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.85ms. Allocated memory is still 142.6MB. Free memory was 91.4MB in the beginning and 89.3MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 348.28ms. Allocated memory is still 142.6MB. Free memory was 89.3MB in the beginning and 73.0MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 89.55ms. Allocated memory is still 142.6MB. Free memory was 72.5MB in the beginning and 65.1MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 68.86ms. Allocated memory is still 142.6MB. Free memory was 65.1MB in the beginning and 59.2MB in the end (delta: 6.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 625]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-07 20:11:33,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE